Insulator



R. SANDS.

INSULATQR. AIPLICATION FILED SEPT. 18. 1919.

1,384,214. Pntm Julyl2,'l9lL RICHARD SANDS, OIE OSAWATOMIE, KANSAS.

Specification of Letters Patent.

Patented J ul3 12, 1921.

Application filed September 18, 1919. Serial No. 324,344.

T0 all w7zom 7325 may concem.

Be it known that I, RICHARD SANDS, a Citizen of the United States, residing at Osawat omie, in the oounty of Miami and State of Kansas, have invented certain new and useul Improvements in Insulators, of Which the following is a specification.

This invention relates to insulators for eleotric lino wires; and it consists in the novel construction and combination of the parts hereinafter fully described and olaimed.- V

In the drawings, Figure 1 is a side v1ew of an insulator construoted according to this invention. Fig. 2 is a front view, and Fig. 3 is a plan view, of the same. Fig.-4 is a cross-section through the insulating plates, showing them separated.

The frame 2 of the insulator is formed of a block of wood or any suitable molded ma- 7 terial or composition. The fra me i s provided with a stem 3 for attachmg 1t to a crosspiec on a polo or to the limb of a tree.

Any other suitable means may hovvever be provided for supporting and .seour1ng the frame in position. The frame is provided wit a longitudinal chamber 4 Which haS a semicircular bottom 5, and which is open at eaoh end. A Vertical slot 6 is formed at the middle part of the frame and extends longitudinally between the top of the frame and the top of the chamber 4. A screw 7 or other similar clamping devise, is .provided for contraoting the side portions of the frame which are slightly resilient. This sorew extends through the slot 6 cr0sswise of its length.

A cover plate 10 of thin shoot metal,or other suitable material, is provided and is arranged over the top 8 of the frame, and is preferably pivoted to it by a pin 12. The cover plate has a lip or flange 14 Which projects over the edge of the frame farthest from the pivot pin 12..

The cover plate prevents the slot from being filled with snow or ice, and the lip holds it in place, but permits it to be sprung upwardly and then moved horizontally upon the fiat top of theframe about the pivot pin 12 as a conter to'expose the slot.

TWo blocks 16 and 18 of insulating materal are provided. The lower block 16 bas a sem icirculai* bottom 17 which rests on the semimrcular bottom 5 of the chamber 4, and the upper block is tapered a little in its thickness so that it :fOrms a key 'or Wedge. The lower block 16 is provided with a longitudinal slot or groove 20 for the line Wire 22, and as many grooves as desirable may be provided. The end portions of the upper block 18 are beveled or inclined so as to shed rain water.

The lower block 16 is prevented from slid ing out of the rear end of the ohamber by means of a -stop plate 24 secured to the frame,but any other suitable stopmay be provided. The bottom block when placed in the chamber adapts itself to the semiclrcular bottom thereof. The wire is dropped onto the"block 16 through the vertical slot, and the top block l8.is driven in flom front to rear to hold the wire in place. The chamber 4 and the insulating blocks are inclined from front to rear to permit rain water to drain away from them. The blooks are finally locked in the chamber by tightening the 'olamping screw or boit. The tapering block 18 may be a little narrower than the ehamber so that it can easily be driven in to clamp the line vvire, and when the sorew 7 is tightened the blocks are both looked in place. When the sorew is slaekened th block 18 can be slid out, and a new or additional lino wire can be inserted. What I daim is: w In an insulator, a supporting frame providd With a chamber 'extending horizontally through its middle part and having a rounded bottom, said frame having a slot extending from its top to the said ohamber, a lower insulating block having a rounded bottom and fitting in the lower part ofthe said ohamber, ,a tapering upper insulating block normally slidable in the upper part. of the said chamber and adapted to clamp the line wire against the lower block, and a clamping device extending through hOles in the upper part of the frame and adapted to RICHARD SANDS. 

